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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * pci.h
3 *
4 * PCI defines and function prototypes
5 * Copyright 1994, Drew Eckhardt
6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
7 *
8 * For more information, please consult the following manuals (look at
9 * http://www.pcisig.com/ for how to get them):
10 *
11 * PCI BIOS Specification
12 * PCI Local Bus Specification
13 * PCI to PCI Bridge Specification
14 * PCI System Design Guide
15 */
16
17#ifndef LINUX_PCI_H
18#define LINUX_PCI_H
19
Alex Chiangf46753c2008-06-10 15:28:50 -060020#include <linux/pci_regs.h> /* The pci register defines */
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022/*
23 * The PCI interface treats multi-function devices as independent
24 * devices. The slot/function address of each device is encoded
25 * in a single byte as follows:
26 *
27 * 7:3 = slot
28 * 2:0 = function
29 */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -080030#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
32#define PCI_FUNC(devfn) ((devfn) & 0x07)
33
34/* Ioctls for /proc/bus/pci/X/Y nodes. */
35#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)
36#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */
37#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */
38#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */
39#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */
40
41#ifdef __KERNEL__
42
David Woodhouse778382e2006-04-29 01:46:02 +010043#include <linux/mod_devicetable.h>
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/types.h>
Sam Ravnborg98db6f12008-04-29 22:38:48 +020046#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <linux/ioport.h>
48#include <linux/list.h>
Andrew Morton4a7fb632006-08-14 22:43:17 -070049#include <linux/compiler.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#include <linux/errno.h>
Alex Chiangf46753c2008-06-10 15:28:50 -060051#include <linux/kobject.h>
Inaky Perez-Gonzalezbae94d02006-11-22 12:40:31 -080052#include <asm/atomic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#include <linux/device.h>
Stephen Rothwell1388cc92008-10-22 13:39:55 +110054#include <linux/io.h>
Yu Zhao74bb1bc2009-03-20 11:25:16 +080055#include <linux/irqreturn.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Adrian Bunk7e7a43c2006-12-19 13:12:07 -080057/* Include the ID list */
58#include <linux/pci_ids.h>
59
Alex Chiangf46753c2008-06-10 15:28:50 -060060/* pci_slot represents a physical slot */
61struct pci_slot {
62 struct pci_bus *bus; /* The bus this slot is on */
63 struct list_head list; /* node in list of slots on this bus */
64 struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */
65 unsigned char number; /* PCI_SLOT(pci_dev->devfn) */
66 struct kobject kobj;
67};
68
Alex Chiang0ad772e2008-10-20 17:41:07 -060069static inline const char *pci_slot_name(const struct pci_slot *slot)
70{
71 return kobject_name(&slot->kobj);
72}
73
Linus Torvalds1da177e2005-04-16 15:20:36 -070074/* File state for mmap()s on /proc/bus/pci/X/Y */
75enum pci_mmap_state {
76 pci_mmap_io,
77 pci_mmap_mem
78};
79
80/* This defines the direction arg to the DMA mapping routines. */
81#define PCI_DMA_BIDIRECTIONAL 0
82#define PCI_DMA_TODEVICE 1
83#define PCI_DMA_FROMDEVICE 2
84#define PCI_DMA_NONE 3
85
Yu Zhaofde09c62008-11-22 02:39:32 +080086/*
87 * For PCI devices, the region numbers are assigned this way:
88 */
89enum {
90 /* #0-5: standard PCI resources */
91 PCI_STD_RESOURCES,
92 PCI_STD_RESOURCE_END = 5,
93
94 /* #6: expansion ROM resource */
95 PCI_ROM_RESOURCE,
96
Yu Zhaod1b054d2009-03-20 11:25:11 +080097 /* device specific resources */
98#ifdef CONFIG_PCI_IOV
99 PCI_IOV_RESOURCES,
100 PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
101#endif
102
Yu Zhaofde09c62008-11-22 02:39:32 +0800103 /* resources assigned to buses behind the bridge */
104#define PCI_BRIDGE_RESOURCE_NUM 4
105
106 PCI_BRIDGE_RESOURCES,
107 PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
108 PCI_BRIDGE_RESOURCE_NUM - 1,
109
110 /* total resources associated with a PCI device */
111 PCI_NUM_RESOURCES,
112
113 /* preserve this for compatibility */
114 DEVICE_COUNT_RESOURCE
115};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116
117typedef int __bitwise pci_power_t;
118
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700119#define PCI_D0 ((pci_power_t __force) 0)
120#define PCI_D1 ((pci_power_t __force) 1)
121#define PCI_D2 ((pci_power_t __force) 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122#define PCI_D3hot ((pci_power_t __force) 3)
123#define PCI_D3cold ((pci_power_t __force) 4)
Daniel Ritz3fe9d192005-08-17 15:32:19 -0700124#define PCI_UNKNOWN ((pci_power_t __force) 5)
Pavel Machek438510f2005-04-16 15:25:24 -0700125#define PCI_POWER_ERROR ((pci_power_t __force) -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126
Rafael J. Wysockiaa8c6c92009-01-16 21:54:43 +0100127#define PCI_PM_D2_DELAY 200
128#define PCI_PM_D3_WAIT 10
129#define PCI_PM_BUS_WAIT 50
130
linas392a1ce2005-11-16 17:10:41 -0600131/** The pci_channel state describes connectivity between the CPU and
132 * the pci device. If some PCI bus between here and the pci device
133 * has crashed or locked up, this info is reflected here.
134 */
135typedef unsigned int __bitwise pci_channel_state_t;
136
137enum pci_channel_state {
138 /* I/O channel is in normal state */
139 pci_channel_io_normal = (__force pci_channel_state_t) 1,
140
141 /* I/O to channel is blocked */
142 pci_channel_io_frozen = (__force pci_channel_state_t) 2,
143
144 /* PCI card is dead */
145 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
146};
147
Brian Kingf7bdd122007-04-06 16:39:36 -0500148typedef unsigned int __bitwise pcie_reset_state_t;
149
150enum pcie_reset_state {
151 /* Reset is NOT asserted (Use to deassert reset) */
152 pcie_deassert_reset = (__force pcie_reset_state_t) 1,
153
154 /* Use #PERST to reset PCI-E device */
155 pcie_warm_reset = (__force pcie_reset_state_t) 2,
156
157 /* Use PCI-E Hot Reset to reset device */
158 pcie_hot_reset = (__force pcie_reset_state_t) 3
159};
160
David Millerba698ad2007-10-25 01:16:30 -0700161typedef unsigned short __bitwise pci_dev_flags_t;
162enum pci_dev_flags {
163 /* INTX_DISABLE in PCI_COMMAND register disables MSI
164 * generation too.
165 */
166 PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
Alan Cox979b1792008-07-24 17:18:38 +0100167 /* Device configuration is irrevocably lost if disabled into D3 */
168 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
David Millerba698ad2007-10-25 01:16:30 -0700169};
170
Stefan Assmanne1d3a902008-06-11 16:35:17 +0200171enum pci_irq_reroute_variant {
172 INTEL_IRQ_REROUTE_VARIANT = 1,
173 MAX_IRQ_REROUTE_VARIANTS = 3
174};
175
Michael S. Tsirkin6e325a62006-02-14 18:52:22 +0200176typedef unsigned short __bitwise pci_bus_flags_t;
177enum pci_bus_flags {
Peter Orubad556ad42007-05-15 13:59:13 +0200178 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
179 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
Michael S. Tsirkin6e325a62006-02-14 18:52:22 +0200180};
181
Shaohua Li41017f02006-02-08 17:11:38 +0800182struct pci_cap_saved_state {
183 struct hlist_node next;
184 char cap_nr;
185 u32 data[0];
186};
187
Shaohua Li7d715a62008-02-25 09:46:41 +0800188struct pcie_link_state;
Jesse Barnesee694392008-04-28 12:30:35 -0700189struct pci_vpd;
Yu Zhaod1b054d2009-03-20 11:25:11 +0800190struct pci_sriov;
Jesse Barnesee694392008-04-28 12:30:35 -0700191
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192/*
193 * The pci_dev structure is used to describe PCI devices.
194 */
195struct pci_dev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 struct list_head bus_list; /* node in per-bus list */
197 struct pci_bus *bus; /* bus this device is on */
198 struct pci_bus *subordinate; /* bus this device bridges to */
199
200 void *sysdata; /* hook for sys-specific extension */
201 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */
Alex Chiangf46753c2008-06-10 15:28:50 -0600202 struct pci_slot *slot; /* Physical slot this device is in */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
204 unsigned int devfn; /* encoded device & function index */
205 unsigned short vendor;
206 unsigned short device;
207 unsigned short subsystem_vendor;
208 unsigned short subsystem_device;
209 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
Auke Kokb8a3a522007-06-08 15:46:30 -0700210 u8 revision; /* PCI revision, low byte of class word */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
Keshavamurthy, Anil S994a65e2007-10-21 16:41:46 -0700212 u8 pcie_type; /* PCI-E device/port type */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 u8 rom_base_reg; /* which config register controls the ROM */
Kristen Accardiffeff782005-11-02 16:24:32 -0800214 u8 pin; /* which interrupt pin this device uses */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
216 struct pci_driver *driver; /* which driver has allocated this device */
217 u64 dma_mask; /* Mask of the bits of bus address this
218 device implements. Normally this is
219 0xffffffff. You only need to change
220 this if your device has broken DMA
221 or supports 64-bit transfers. */
222
FUJITA Tomonori4d57cdf2008-02-04 22:27:55 -0800223 struct device_dma_parameters dma_parms;
224
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 pci_power_t current_state; /* Current operating state. In ACPI-speak,
226 this is D0-D3, D0 being fully functional,
227 and D3 being off. */
Rafael J. Wysocki337001b2008-07-07 03:36:24 +0200228 int pm_cap; /* PM capability offset in the
229 configuration space */
230 unsigned int pme_support:5; /* Bitmask of states from which PME#
231 can be generated */
232 unsigned int d1_support:1; /* Low power state D1 is supported */
233 unsigned int d2_support:1; /* Low power state D2 is supported */
234 unsigned int no_d1d2:1; /* Only allow D0 and D3 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Shaohua Li7d715a62008-02-25 09:46:41 +0800236#ifdef CONFIG_PCIEASPM
237 struct pcie_link_state *link_state; /* ASPM link state. */
238#endif
239
linas392a1ce2005-11-16 17:10:41 -0600240 pci_channel_state_t error_state; /* current connectivity state */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 struct device dev; /* Generic device interface */
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 int cfg_size; /* Size of configuration space */
244
245 /*
246 * Instead of touching interrupt line and base address registers
247 * directly, use the values stored here. They might be different!
248 */
249 unsigned int irq;
250 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
251
252 /* These fields are used by common fixups */
253 unsigned int transparent:1; /* Transparent PCI bridge */
254 unsigned int multifunction:1;/* Part of multi-function device */
255 /* keep track of device state */
Greg Kroah-Hartman8a1bc902008-02-14 14:56:56 -0800256 unsigned int is_added:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 unsigned int is_busmaster:1; /* device is busmaster */
Kristen Accardi4602b882005-08-16 15:15:58 -0700258 unsigned int no_msi:1; /* device may not use msi */
Brian Kinge04b0ea2005-09-27 01:21:55 -0700259 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
Doug Thompsonbd8481e2006-05-08 17:06:09 -0700260 unsigned int broken_parity_status:1; /* Device generates false positive parity */
Stefan Assmanne1d3a902008-06-11 16:35:17 +0200261 unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */
Shaohua Li99dc8042006-05-26 10:58:27 +0800262 unsigned int msi_enabled:1;
263 unsigned int msix_enabled:1;
Yu Zhao58c3a722008-10-14 14:02:53 +0800264 unsigned int ari_enabled:1; /* ARI forwarding */
Tejun Heo9ac78492007-01-20 16:00:26 +0900265 unsigned int is_managed:1;
Keshavamurthy, Anil S994a65e2007-10-21 16:41:46 -0700266 unsigned int is_pcie:1;
Rafael J. Wysockiaa8c6c92009-01-16 21:54:43 +0100267 unsigned int state_saved:1;
Yu Zhaod1b054d2009-03-20 11:25:11 +0800268 unsigned int is_physfn:1;
Yu Zhaodd7cc442009-03-20 11:25:15 +0800269 unsigned int is_virtfn:1;
David Millerba698ad2007-10-25 01:16:30 -0700270 pci_dev_flags_t dev_flags;
Inaky Perez-Gonzalezbae94d02006-11-22 12:40:31 -0800271 atomic_t enable_cnt; /* pci_enable_device has been called */
Kristen Accardi4602b882005-08-16 15:15:58 -0700272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 u32 saved_config_space[16]; /* config space saved at suspend time */
Shaohua Li41017f02006-02-08 17:11:38 +0800274 struct hlist_head saved_cap_space;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
276 int rom_attr_enabled; /* has display of the rom attribute been enabled? */
277 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
venkatesh.pallipadi@intel.com45aec1a2008-03-18 17:00:22 -0700278 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
Eric W. Biedermanded86d82007-01-28 12:42:52 -0700279#ifdef CONFIG_PCI_MSI
Michael Ellerman4aa9bc92007-04-05 17:19:10 +1000280 struct list_head msi_list;
Eric W. Biedermanded86d82007-01-28 12:42:52 -0700281#endif
Ben Hutchings94e61082008-03-05 16:52:39 +0000282 struct pci_vpd *vpd;
Yu Zhaod1b054d2009-03-20 11:25:11 +0800283#ifdef CONFIG_PCI_IOV
Yu Zhaodd7cc442009-03-20 11:25:15 +0800284 union {
285 struct pci_sriov *sriov; /* SR-IOV capability related */
286 struct pci_dev *physfn; /* the PF this VF is associated with */
287 };
Yu Zhaod1b054d2009-03-20 11:25:11 +0800288#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289};
290
Michael Ellerman65891212007-04-05 17:19:08 +1000291extern struct pci_dev *alloc_pci_dev(void);
292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
294#define to_pci_dev(n) container_of(n, struct pci_dev, dev)
295#define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
296
Linas Vepstasa7369f12006-12-12 16:55:59 -0600297static inline int pci_channel_offline(struct pci_dev *pdev)
298{
299 return (pdev->error_state != pci_channel_io_normal);
300}
301
Shaohua Li41017f02006-02-08 17:11:38 +0800302static inline struct pci_cap_saved_state *pci_find_saved_cap(
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800303 struct pci_dev *pci_dev, char cap)
Shaohua Li41017f02006-02-08 17:11:38 +0800304{
305 struct pci_cap_saved_state *tmp;
306 struct hlist_node *pos;
307
308 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
309 if (tmp->cap_nr == cap)
310 return tmp;
311 }
312 return NULL;
313}
314
315static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
316 struct pci_cap_saved_state *new_cap)
317{
318 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
319}
320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321#ifndef PCI_BUS_NUM_RESOURCES
Yinghai Lu30a18d62008-02-19 03:21:20 -0800322#define PCI_BUS_NUM_RESOURCES 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323#endif
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700324
325#define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327struct pci_bus {
328 struct list_head node; /* node in list of buses */
329 struct pci_bus *parent; /* parent bus this bridge is on */
330 struct list_head children; /* list of child buses */
331 struct list_head devices; /* list of devices on this bus */
332 struct pci_dev *self; /* bridge device as seen by parent */
Alex Chiangf46753c2008-06-10 15:28:50 -0600333 struct list_head slots; /* list of slots on this bus */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 struct resource *resource[PCI_BUS_NUM_RESOURCES];
335 /* address space routed to this bus */
336
337 struct pci_ops *ops; /* configuration access functions */
338 void *sysdata; /* hook for sys-specific extension */
339 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
340
341 unsigned char number; /* bus number */
342 unsigned char primary; /* number of primary bridge */
343 unsigned char secondary; /* number of secondary bridge */
344 unsigned char subordinate; /* max number of subordinate buses */
345
346 char name[48];
347
348 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */
Michael S. Tsirkin6e325a62006-02-14 18:52:22 +0200349 pci_bus_flags_t bus_flags; /* Inherited by child busses */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 struct device *bridge;
Greg Kroah-Hartmanfd7d1ce2007-05-22 22:47:54 -0400351 struct device dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
353 struct bin_attribute *legacy_mem; /* legacy mem */
Greg Kroah-Hartmancc74d962008-03-12 21:48:03 -0700354 unsigned int is_added:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355};
356
357#define pci_bus_b(n) list_entry(n, struct pci_bus, node)
Greg Kroah-Hartmanfd7d1ce2007-05-22 22:47:54 -0400358#define to_pci_bus(n) container_of(n, struct pci_bus, dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
Kenji Kaneshige79af72d2009-03-20 14:55:55 -0600360/*
361 * Returns true if the pci bus is root (behind host-pci bridge),
362 * false otherwise
363 */
364static inline bool pci_is_root_bus(struct pci_bus *pbus)
365{
366 return !(pbus->parent);
367}
368
Rafael J. Wysocki16cf0eb2009-01-05 14:50:27 +0100369#ifdef CONFIG_PCI_MSI
370static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
371{
372 return pci_dev->msi_enabled || pci_dev->msix_enabled;
373}
374#else
375static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
376#endif
377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378/*
379 * Error values that may be returned by PCI functions.
380 */
381#define PCIBIOS_SUCCESSFUL 0x00
382#define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
383#define PCIBIOS_BAD_VENDOR_ID 0x83
384#define PCIBIOS_DEVICE_NOT_FOUND 0x86
385#define PCIBIOS_BAD_REGISTER_NUMBER 0x87
386#define PCIBIOS_SET_FAILED 0x88
387#define PCIBIOS_BUFFER_TOO_SMALL 0x89
388
389/* Low-level architecture-dependent routines */
390
391struct pci_ops {
392 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
393 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
394};
395
Matthew Wilcoxb6ce0682008-02-10 09:45:28 -0500396/*
397 * ACPI needs to be able to access PCI config space before we've done a
398 * PCI bus scan and created pci_bus structures.
399 */
400extern int raw_pci_read(unsigned int domain, unsigned int bus,
401 unsigned int devfn, int reg, int len, u32 *val);
402extern int raw_pci_write(unsigned int domain, unsigned int bus,
403 unsigned int devfn, int reg, int len, u32 val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
405struct pci_bus_region {
Benjamin Herrenschmidtc40a22e2007-12-10 17:32:15 +1100406 resource_size_t start;
407 resource_size_t end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408};
409
410struct pci_dynids {
411 spinlock_t lock; /* protects list, index */
412 struct list_head list; /* for IDs added at runtime */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413};
414
linas392a1ce2005-11-16 17:10:41 -0600415/* ---------------------------------------------------------------- */
416/** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
Rolf Eike Beer579082d2007-07-10 13:35:05 +0200417 * a set of callbacks in struct pci_error_handlers, then that device driver
linas392a1ce2005-11-16 17:10:41 -0600418 * will be notified of PCI bus errors, and will be driven to recovery
419 * when an error occurs.
420 */
421
422typedef unsigned int __bitwise pci_ers_result_t;
423
424enum pci_ers_result {
425 /* no result/none/not supported in device driver */
426 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
427
428 /* Device driver can recover without slot reset */
429 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
430
431 /* Device driver wants slot to be reset. */
432 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
433
434 /* Device has completely failed, is unrecoverable */
435 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
436
437 /* Device driver is fully recovered and operational */
438 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
439};
440
441/* PCI bus error event callbacks */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800442struct pci_error_handlers {
linas392a1ce2005-11-16 17:10:41 -0600443 /* PCI bus error detected on this device */
444 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800445 enum pci_channel_state error);
linas392a1ce2005-11-16 17:10:41 -0600446
447 /* MMIO has been re-enabled, but not DMA */
448 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
449
450 /* PCI Express link has been reset */
451 pci_ers_result_t (*link_reset)(struct pci_dev *dev);
452
453 /* PCI slot has been reset */
454 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
455
456 /* Device driver may resume normal operations */
457 void (*resume)(struct pci_dev *dev);
458};
459
460/* ---------------------------------------------------------------- */
461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462struct module;
463struct pci_driver {
464 struct list_head node;
465 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
467 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
468 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
469 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
Linus Torvaldscbd69db2006-06-24 14:50:29 -0700470 int (*suspend_late) (struct pci_dev *dev, pm_message_t state);
471 int (*resume_early) (struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 int (*resume) (struct pci_dev *dev); /* Device woken up */
Greg KHc8958172005-04-08 14:53:31 +0900473 void (*shutdown) (struct pci_dev *dev);
linas392a1ce2005-11-16 17:10:41 -0600474 struct pci_error_handlers *err_handler;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 struct device_driver driver;
476 struct pci_dynids dynids;
477};
478
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800479#define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480
481/**
Andrew Morton9f9351b2008-03-10 11:43:34 -0700482 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
Jonas Bonn90a1ba02008-02-22 11:02:21 +0100483 * @_table: device table name
484 *
485 * This macro is used to create a struct pci_device_id array (a device table)
486 * in a generic manner.
487 */
Andrew Morton9f9351b2008-03-10 11:43:34 -0700488#define DEFINE_PCI_DEVICE_TABLE(_table) \
Jonas Bonn90a1ba02008-02-22 11:02:21 +0100489 const struct pci_device_id _table[] __devinitconst
490
491/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 * PCI_DEVICE - macro used to describe a specific pci device
493 * @vend: the 16 bit PCI Vendor ID
494 * @dev: the 16 bit PCI Device ID
495 *
496 * This macro is used to create a struct pci_device_id that matches a
497 * specific device. The subvendor and subdevice fields will be set to
498 * PCI_ANY_ID.
499 */
500#define PCI_DEVICE(vend,dev) \
501 .vendor = (vend), .device = (dev), \
502 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
503
504/**
505 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
506 * @dev_class: the class, subclass, prog-if triple for this device
507 * @dev_class_mask: the class mask for this device
508 *
509 * This macro is used to create a struct pci_device_id that matches a
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700510 * specific PCI class. The vendor, device, subvendor, and subdevice
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 * fields will be set to PCI_ANY_ID.
512 */
513#define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
514 .class = (dev_class), .class_mask = (dev_class_mask), \
515 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
516 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
517
Alan Cox1597cac2006-12-04 15:14:45 -0800518/**
519 * PCI_VDEVICE - macro used to describe a specific pci device in short form
Zhao, Yuc322b282008-10-13 19:36:05 +0800520 * @vendor: the vendor name
521 * @device: the 16 bit PCI Device ID
Alan Cox1597cac2006-12-04 15:14:45 -0800522 *
523 * This macro is used to create a struct pci_device_id that matches a
524 * specific PCI device. The subvendor, and subdevice fields will be set
525 * to PCI_ANY_ID. The macro allows the next field to follow as the device
526 * private data.
527 */
528
529#define PCI_VDEVICE(vendor, device) \
530 PCI_VENDOR_ID_##vendor, (device), \
531 PCI_ANY_ID, PCI_ANY_ID, 0, 0
532
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533/* these external functions are only available when PCI support is enabled */
534#ifdef CONFIG_PCI
535
536extern struct bus_type pci_bus_type;
537
538/* Do NOT directly access these two variables, unless you are arch specific pci
539 * code, or pci core code. */
540extern struct list_head pci_root_buses; /* list of all known PCI buses */
Zhang, Yanmined4aaad2007-07-15 23:39:39 -0700541/* Some device drivers need know if pci is initiated */
542extern int no_pci_devices(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
544void pcibios_fixup_bus(struct pci_bus *);
Andrew Morton4a7fb632006-08-14 22:43:17 -0700545int __must_check pcibios_enable_device(struct pci_dev *, int mask);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800546char *pcibios_setup(char *str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547
548/* Used only when drivers/pci/setup.c is used */
Greg Kroah-Hartmane31dd6e2006-06-12 17:06:02 -0700549void pcibios_align_resource(void *, struct resource *, resource_size_t,
550 resource_size_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551void pcibios_update_irq(struct pci_dev *, int irq);
552
553/* Generic PCI functions used internally */
554
555extern struct pci_bus *pci_find_bus(int domain, int busnr);
akpm@linux-foundation.orgc48f1672009-02-03 15:45:26 -0800556void pci_bus_add_devices(const struct pci_bus *bus);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800557struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
558 struct pci_ops *ops, void *sysdata);
Sam Ravnborg98db6f12008-04-29 22:38:48 +0200559static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800560 void *sysdata)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561{
Rajesh Shahc431ada2005-04-28 00:25:45 -0700562 struct pci_bus *root_bus;
563 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
564 if (root_bus)
565 pci_bus_add_devices(root_bus);
566 return root_bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800568struct pci_bus *pci_create_bus(struct device *parent, int bus,
569 struct pci_ops *ops, void *sysdata);
570struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
571 int busnr);
Alex Chiangf46753c2008-06-10 15:28:50 -0600572struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
Alex Chiang828f3762008-10-20 17:40:52 -0600573 const char *name,
574 struct hotplug_slot *hotplug);
Alex Chiangf46753c2008-06-10 15:28:50 -0600575void pci_destroy_slot(struct pci_slot *slot);
Alex Chiangd25b7c82008-10-20 17:40:47 -0600576void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577int pci_scan_slot(struct pci_bus *bus, int devfn);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800578struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
Paul Mackerrascdb9b9f2005-09-06 09:31:03 +1000579void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580unsigned int pci_scan_child_bus(struct pci_bus *bus);
Greg Kroah-Hartmanb19441a2006-08-28 11:43:25 -0700581int __must_check pci_bus_add_device(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582void pci_read_bridge_bases(struct pci_bus *child);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800583struct resource *pci_find_parent_resource(const struct pci_dev *dev,
584 struct resource *res);
Bjorn Helgaas57c2cf72008-12-11 11:24:23 -0700585u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
Bjorn Helgaas68feac82008-12-16 21:36:55 -0700587u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
589extern void pci_dev_put(struct pci_dev *dev);
590extern void pci_remove_bus(struct pci_bus *b);
591extern void pci_remove_bus_device(struct pci_dev *dev);
Satoru Takeuchi24f8aa92006-09-12 10:16:36 -0700592extern void pci_stop_bus_device(struct pci_dev *dev);
Dominik Brodowskib3743fa2005-09-09 13:03:23 -0700593void pci_setup_cardbus(struct pci_bus *bus);
Matt Domsch6b4b78f2006-09-29 15:23:23 -0500594extern void pci_sort_breadthfirst(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595
596/* Generic PCI functions exported to card drivers */
597
Jeff Garzikbd3989e2007-10-29 09:48:09 -0400598#ifdef CONFIG_PCI_LEGACY
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800599struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
600 unsigned int device,
Greg KHb08508c2008-08-26 08:20:34 -0700601 struct pci_dev *from);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800602struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
603 unsigned int devfn);
Jeff Garzikbd3989e2007-10-29 09:48:09 -0400604#endif /* CONFIG_PCI_LEGACY */
605
James Bottomley388c8c12008-08-03 13:02:12 -0500606enum pci_lost_interrupt_reason {
607 PCI_LOST_IRQ_NO_INFORMATION = 0,
608 PCI_LOST_IRQ_DISABLE_MSI,
609 PCI_LOST_IRQ_DISABLE_MSIX,
610 PCI_LOST_IRQ_DISABLE_ACPI,
611};
612enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800613int pci_find_capability(struct pci_dev *dev, int cap);
614int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
615int pci_find_ext_capability(struct pci_dev *dev, int cap);
616int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
617int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
Alan Cox29f3eb62006-10-16 16:20:21 -0700618struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619
Andrew Mortond42552c2006-10-21 10:24:12 -0700620struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
621 struct pci_dev *from);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800622struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 unsigned int ss_vendor, unsigned int ss_device,
Greg KHb08508c2008-08-26 08:20:34 -0700624 struct pci_dev *from);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800625struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
626struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
627struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628int pci_dev_present(const struct pci_device_id *ids);
629
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800630int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
631 int where, u8 *val);
632int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
633 int where, u16 *val);
634int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
635 int where, u32 *val);
636int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
637 int where, u8 val);
638int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
639 int where, u16 val);
640int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
641 int where, u32 val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
643static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
644{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800645 return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646}
647static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
648{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800649 return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800651static inline int pci_read_config_dword(struct pci_dev *dev, int where,
652 u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800654 return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655}
656static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
657{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800658 return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659}
660static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
661{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800662 return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800664static inline int pci_write_config_dword(struct pci_dev *dev, int where,
665 u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800667 return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668}
669
Andrew Morton4a7fb632006-08-14 22:43:17 -0700670int __must_check pci_enable_device(struct pci_dev *dev);
Benjamin Herrenschmidtb7189892007-12-20 15:28:08 +1100671int __must_check pci_enable_device_io(struct pci_dev *dev);
672int __must_check pci_enable_device_mem(struct pci_dev *dev);
Tejun Heo0b62e132007-07-27 14:43:35 +0900673int __must_check pci_reenable_device(struct pci_dev *);
Tejun Heo9ac78492007-01-20 16:00:26 +0900674int __must_check pcim_enable_device(struct pci_dev *pdev);
675void pcim_pin_device(struct pci_dev *pdev);
676
Yuji Shimada296ccb02009-04-03 16:41:46 +0900677static inline int pci_is_enabled(struct pci_dev *pdev)
678{
679 return (atomic_read(&pdev->enable_cnt) > 0);
680}
681
Tejun Heo9ac78492007-01-20 16:00:26 +0900682static inline int pci_is_managed(struct pci_dev *pdev)
683{
684 return pdev->is_managed;
685}
686
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687void pci_disable_device(struct pci_dev *dev);
688void pci_set_master(struct pci_dev *dev);
Ben Hutchings6a479072008-12-23 03:08:29 +0000689void pci_clear_master(struct pci_dev *dev);
Brian Kingf7bdd122007-04-06 16:39:36 -0500690int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691#define HAVE_PCI_SET_MWI
Andrew Morton4a7fb632006-08-14 22:43:17 -0700692int __must_check pci_set_mwi(struct pci_dev *dev);
Randy Dunlap694625c2007-07-09 11:55:54 -0700693int pci_try_set_mwi(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694void pci_clear_mwi(struct pci_dev *dev);
Brett M Russa04ce0f2005-08-15 15:23:41 -0400695void pci_intx(struct pci_dev *dev, int enable);
Eric W. Biedermanf5f2b132007-03-05 00:30:07 -0800696void pci_msi_off(struct pci_dev *dev);
Linus Torvalds9c8550e2005-09-09 15:43:46 -0700697int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
698int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
FUJITA Tomonori4d57cdf2008-02-04 22:27:55 -0800699int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
FUJITA Tomonori59fc67d2008-02-04 22:28:14 -0800700int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
Peter Orubad556ad42007-05-15 13:59:13 +0200701int pcix_get_max_mmrbc(struct pci_dev *dev);
702int pcix_get_mmrbc(struct pci_dev *dev);
703int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
Brice Goglin2637e5b2007-08-14 12:43:48 +0200704int pcie_get_readrq(struct pci_dev *dev);
Peter Orubad556ad42007-05-15 13:59:13 +0200705int pcie_set_readrq(struct pci_dev *dev, int rq);
Sheng Yang8dd7f802008-10-21 17:38:25 +0800706int pci_reset_function(struct pci_dev *dev);
707int pci_execute_reset_function(struct pci_dev *dev);
Yu Zhao14add802008-11-22 02:38:52 +0800708void pci_update_resource(struct pci_dev *dev, int resno);
Andrew Morton4a7fb632006-08-14 22:43:17 -0700709int __must_check pci_assign_resource(struct pci_dev *dev, int i);
Hidetoshi Setoc87deff2006-12-18 10:31:06 +0900710int pci_select_bars(struct pci_dev *dev, unsigned long flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711
712/* ROM control related routines */
Alan Coxe416de52008-09-23 17:25:10 +0100713int pci_enable_rom(struct pci_dev *pdev);
714void pci_disable_rom(struct pci_dev *pdev);
Dave Jones144a50e2005-08-09 00:20:10 -0400715void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
Timothy S. Nelson97c44832009-01-30 06:12:47 +1100717size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
719/* Power management related routines */
720int pci_save_state(struct pci_dev *dev);
721int pci_restore_state(struct pci_dev *dev);
Rafael J. Wysocki0e5dd462009-03-26 22:51:40 +0100722int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state);
Linus Torvalds9c8550e2005-09-09 15:43:46 -0700723int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
724pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
Rafael J. Wysockie5899e12008-07-19 14:39:24 +0200725bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
Rafael J. Wysocki5a6c9b62008-08-08 00:14:24 +0200726void pci_pme_active(struct pci_dev *dev, bool enable);
Linus Torvalds9c8550e2005-09-09 15:43:46 -0700727int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
Rafael J. Wysocki0235c4f2008-08-18 21:38:00 +0200728int pci_wake_from_d3(struct pci_dev *dev, bool enable);
Rafael J. Wysockie5899e12008-07-19 14:39:24 +0200729pci_power_t pci_target_state(struct pci_dev *dev);
Rafael J. Wysocki404cc2d2008-07-07 03:35:26 +0200730int pci_prepare_to_sleep(struct pci_dev *dev);
731int pci_back_from_sleep(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732
Kumar Galace5ccde2007-07-16 23:27:10 -0500733/* Functions for PCI Hotplug drivers to use */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800734int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
Alex Chiang3ed4fd92009-03-20 14:56:25 -0600735#ifdef CONFIG_HOTPLUG
736unsigned int pci_rescan_bus(struct pci_bus *bus);
737#endif
Kumar Galace5ccde2007-07-16 23:27:10 -0500738
Stephen Hemminger287d19c2008-12-18 09:17:16 -0800739/* Vital product data routines */
740ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
741ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
Stephen Hemmingerdb567942008-12-18 09:17:16 -0800742int pci_vpd_truncate(struct pci_dev *dev, size_t size);
Stephen Hemminger287d19c2008-12-18 09:17:16 -0800743
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
Andrew Mortonea741552009-02-18 10:44:29 -0800745void pci_bus_assign_resources(const struct pci_bus *bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746void pci_bus_size_bridges(struct pci_bus *bus);
747int pci_claim_resource(struct pci_dev *, int);
748void pci_assign_unassigned_resources(void);
749void pdev_enable_device(struct pci_dev *);
750void pdev_sort_resources(struct pci_dev *, struct resource_list *);
Bjorn Helgaas842de402008-03-04 11:56:47 -0700751int pci_enable_resources(struct pci_dev *, int mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
753 int (*)(struct pci_dev *, u8, u8));
754#define HAVE_PCI_REQ_REGIONS 2
Andrew Morton4a7fb632006-08-14 22:43:17 -0700755int __must_check pci_request_regions(struct pci_dev *, const char *);
Arjan van de Vene8de1482008-10-22 19:55:31 -0700756int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757void pci_release_regions(struct pci_dev *);
Andrew Morton4a7fb632006-08-14 22:43:17 -0700758int __must_check pci_request_region(struct pci_dev *, int, const char *);
Arjan van de Vene8de1482008-10-22 19:55:31 -0700759int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760void pci_release_region(struct pci_dev *, int);
Hidetoshi Setoc87deff2006-12-18 10:31:06 +0900761int pci_request_selected_regions(struct pci_dev *, int, const char *);
Arjan van de Vene8de1482008-10-22 19:55:31 -0700762int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
Hidetoshi Setoc87deff2006-12-18 10:31:06 +0900763void pci_release_selected_regions(struct pci_dev *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764
765/* drivers/pci/bus.c */
Andrew Morton4a7fb632006-08-14 22:43:17 -0700766int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
767 struct resource *res, resource_size_t size,
768 resource_size_t align, resource_size_t min,
769 unsigned int type_mask,
770 void (*alignf)(void *, struct resource *,
771 resource_size_t, resource_size_t),
772 void *alignf_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773void pci_enable_bridges(struct pci_bus *bus);
774
Laurent riffard863b18f2005-10-27 23:12:54 +0200775/* Proper probing supporting hot-pluggable devices */
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -0800776int __must_check __pci_register_driver(struct pci_driver *, struct module *,
777 const char *mod_name);
Andrew Mortonbba81162008-07-30 12:07:04 -0700778
779/*
780 * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded
781 */
782#define pci_register_driver(driver) \
783 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
Laurent riffard863b18f2005-10-27 23:12:54 +0200784
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800785void pci_unregister_driver(struct pci_driver *dev);
786void pci_remove_behind_bridge(struct pci_dev *dev);
787struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
788const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
789 struct pci_dev *dev);
790int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
791 int pass);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
Paul Mackerrascecf4862005-08-18 14:33:01 +1000793void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
794 void *userdata);
Yinghai Lu70b9f7d2008-04-28 16:27:23 -0700795int pci_cfg_space_size_ext(struct pci_dev *dev);
Benjamin Herrenschmidtac7dc652005-12-13 18:09:16 +1100796int pci_cfg_space_size(struct pci_dev *dev);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800797unsigned char pci_bus_max_busnr(struct pci_bus *bus);
Paul Mackerrascecf4862005-08-18 14:33:01 +1000798
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799/* kmem_cache style wrapper around pci_alloc_consistent() */
800
801#include <linux/dmapool.h>
802
803#define pci_pool dma_pool
804#define pci_pool_create(name, pdev, size, align, allocation) \
805 dma_pool_create(name, &pdev->dev, size, align, allocation)
806#define pci_pool_destroy(pool) dma_pool_destroy(pool)
807#define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
808#define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
809
David S. Millere24c2d92005-06-02 12:55:50 -0700810enum pci_dma_burst_strategy {
811 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
812 strategy_parameter is N/A */
813 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
814 byte boundaries */
815 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
816 strategy_parameter byte boundaries */
817};
818
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819struct msix_entry {
Yinghai Lu16dbef42008-08-15 19:36:45 -0700820 u32 vector; /* kernel uses to write allocated vector */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821 u16 entry; /* driver uses to specify entry, OS writes */
822};
823
Eric W. Biederman0366f8f2006-10-04 02:16:33 -0700824
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825#ifndef CONFIG_PCI_MSI
Matthew Wilcox1c8d7b02009-03-17 08:54:10 -0400826static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800827{
828 return -1;
829}
830
Yinghai Lud52877c2008-04-23 14:58:09 -0700831static inline void pci_msi_shutdown(struct pci_dev *dev)
832{ }
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800833static inline void pci_disable_msi(struct pci_dev *dev)
834{ }
835
Rafael J. Wysockia52e2e32009-01-24 00:21:14 +0100836static inline int pci_msix_table_size(struct pci_dev *dev)
837{
838 return 0;
839}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800840static inline int pci_enable_msix(struct pci_dev *dev,
841 struct msix_entry *entries, int nvec)
842{
843 return -1;
844}
845
Yinghai Lud52877c2008-04-23 14:58:09 -0700846static inline void pci_msix_shutdown(struct pci_dev *dev)
847{ }
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800848static inline void pci_disable_msix(struct pci_dev *dev)
849{ }
850
851static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev)
852{ }
853
854static inline void pci_restore_msi_state(struct pci_dev *dev)
855{ }
Andrew Patterson07ae95f2008-11-10 15:31:05 -0700856static inline int pci_msi_enabled(void)
857{
858 return 0;
859}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860#else
Matthew Wilcox1c8d7b02009-03-17 08:54:10 -0400861extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
Yinghai Lud52877c2008-04-23 14:58:09 -0700862extern void pci_msi_shutdown(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863extern void pci_disable_msi(struct pci_dev *dev);
Rafael J. Wysockia52e2e32009-01-24 00:21:14 +0100864extern int pci_msix_table_size(struct pci_dev *dev);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800865extern int pci_enable_msix(struct pci_dev *dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 struct msix_entry *entries, int nvec);
Yinghai Lud52877c2008-04-23 14:58:09 -0700867extern void pci_msix_shutdown(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868extern void pci_disable_msix(struct pci_dev *dev);
869extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
Linas Vepstas94688cf2007-11-07 15:43:59 -0600870extern void pci_restore_msi_state(struct pci_dev *dev);
Andrew Patterson07ae95f2008-11-10 15:31:05 -0700871extern int pci_msi_enabled(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872#endif
873
Andrew Patterson3e1b1602008-11-10 15:30:55 -0700874#ifndef CONFIG_PCIEASPM
875static inline int pcie_aspm_enabled(void)
876{
877 return 0;
878}
879#else
880extern int pcie_aspm_enabled(void);
881#endif
882
Matthew Wilcox1c8d7b02009-03-17 08:54:10 -0400883#define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1)
884
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700885#ifdef CONFIG_HT_IRQ
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700886/* The functions a driver should call */
887int ht_create_irq(struct pci_dev *dev, int idx);
888void ht_destroy_irq(unsigned int irq);
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700889#endif /* CONFIG_HT_IRQ */
890
Brian Kinge04b0ea2005-09-27 01:21:55 -0700891extern void pci_block_user_cfg_access(struct pci_dev *dev);
892extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
893
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700894/*
895 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
896 * a PCI domain is defined to be a set of PCI busses which share
897 * configuration space.
898 */
Jeff Garzik32a2eea2007-10-11 16:57:27 -0400899#ifdef CONFIG_PCI_DOMAINS
900extern int pci_domains_supported;
901#else
902enum { pci_domains_supported = 0 };
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800903static inline int pci_domain_nr(struct pci_bus *bus)
904{
905 return 0;
906}
907
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700908static inline int pci_proc_domain(struct pci_bus *bus)
909{
910 return 0;
911}
Jeff Garzik32a2eea2007-10-11 16:57:27 -0400912#endif /* CONFIG_PCI_DOMAINS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700914#else /* CONFIG_PCI is not enabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915
916/*
917 * If the system does not have PCI, clearly these return errors. Define
918 * these as simple inline functions to avoid hair in drivers.
919 */
920
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800921#define _PCI_NOP(o, s, t) \
922 static inline int pci_##o##_config_##s(struct pci_dev *dev, \
923 int where, t val) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800925
926#define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \
927 _PCI_NOP(o, word, u16 x) \
928 _PCI_NOP(o, dword, u32 x)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929_PCI_NOP_ALL(read, *)
930_PCI_NOP_ALL(write,)
931
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800932static inline struct pci_dev *pci_find_device(unsigned int vendor,
933 unsigned int device,
Greg KHb08508c2008-08-26 08:20:34 -0700934 struct pci_dev *from)
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800935{
936 return NULL;
937}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800939static inline struct pci_dev *pci_find_slot(unsigned int bus,
940 unsigned int devfn)
941{
942 return NULL;
943}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944
Andrew Mortond42552c2006-10-21 10:24:12 -0700945static inline struct pci_dev *pci_get_device(unsigned int vendor,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800946 unsigned int device,
947 struct pci_dev *from)
948{
949 return NULL;
950}
Andrew Mortond42552c2006-10-21 10:24:12 -0700951
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800952static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
953 unsigned int device,
954 unsigned int ss_vendor,
955 unsigned int ss_device,
Greg KHb08508c2008-08-26 08:20:34 -0700956 struct pci_dev *from)
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800957{
958 return NULL;
959}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800961static inline struct pci_dev *pci_get_class(unsigned int class,
962 struct pci_dev *from)
963{
964 return NULL;
965}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966
967#define pci_dev_present(ids) (0)
Zhang, Yanmined4aaad2007-07-15 23:39:39 -0700968#define no_pci_devices() (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969#define pci_dev_put(dev) do { } while (0)
970
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800971static inline void pci_set_master(struct pci_dev *dev)
972{ }
973
974static inline int pci_enable_device(struct pci_dev *dev)
975{
976 return -EIO;
977}
978
979static inline void pci_disable_device(struct pci_dev *dev)
980{ }
981
982static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
983{
984 return -EIO;
985}
986
Randy Dunlap80be0382008-06-30 11:35:53 -0700987static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
988{
989 return -EIO;
990}
991
FUJITA Tomonori4d57cdf2008-02-04 22:27:55 -0800992static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
993 unsigned int size)
994{
995 return -EIO;
996}
997
FUJITA Tomonori59fc67d2008-02-04 22:28:14 -0800998static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
999 unsigned long mask)
1000{
1001 return -EIO;
1002}
1003
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001004static inline int pci_assign_resource(struct pci_dev *dev, int i)
1005{
1006 return -EBUSY;
1007}
1008
1009static inline int __pci_register_driver(struct pci_driver *drv,
1010 struct module *owner)
1011{
1012 return 0;
1013}
1014
1015static inline int pci_register_driver(struct pci_driver *drv)
1016{
1017 return 0;
1018}
1019
1020static inline void pci_unregister_driver(struct pci_driver *drv)
1021{ }
1022
1023static inline int pci_find_capability(struct pci_dev *dev, int cap)
1024{
1025 return 0;
1026}
1027
1028static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
1029 int cap)
1030{
1031 return 0;
1032}
1033
1034static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
1035{
1036 return 0;
1037}
1038
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039/* Power management related routines */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001040static inline int pci_save_state(struct pci_dev *dev)
1041{
1042 return 0;
1043}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001045static inline int pci_restore_state(struct pci_dev *dev)
1046{
1047 return 0;
1048}
1049
1050static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
1051{
1052 return 0;
1053}
1054
1055static inline pci_power_t pci_choose_state(struct pci_dev *dev,
1056 pm_message_t state)
1057{
1058 return PCI_D0;
1059}
1060
1061static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
1062 int enable)
1063{
1064 return 0;
1065}
1066
1067static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
1068{
1069 return -EIO;
1070}
1071
1072static inline void pci_release_regions(struct pci_dev *dev)
1073{ }
Sergei Shtylyov0da0ead2007-04-01 21:13:58 +04001074
Kumar Galaa46e8122005-07-29 12:16:27 -07001075#define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
1076
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001077static inline void pci_block_user_cfg_access(struct pci_dev *dev)
1078{ }
1079
1080static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
1081{ }
Brian Kinge04b0ea2005-09-27 01:21:55 -07001082
Randy Dunlapd80d0212007-07-01 12:06:37 -07001083static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
1084{ return NULL; }
1085
1086static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
1087 unsigned int devfn)
1088{ return NULL; }
1089
1090static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
1091 unsigned int devfn)
1092{ return NULL; }
1093
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -07001094#endif /* CONFIG_PCI */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -07001096/* Include architecture-dependent settings and functions */
1097
1098#include <asm/pci.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099
1100/* these helpers provide future and backwards compatibility
1101 * for accessing popular PCI BAR info */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001102#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
1103#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
1104#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105#define pci_resource_len(dev,bar) \
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001106 ((pci_resource_start((dev), (bar)) == 0 && \
1107 pci_resource_end((dev), (bar)) == \
1108 pci_resource_start((dev), (bar))) ? 0 : \
1109 \
1110 (pci_resource_end((dev), (bar)) - \
1111 pci_resource_start((dev), (bar)) + 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112
1113/* Similar to the helpers above, these manipulate per-pci_dev
1114 * driver-specific data. They are really just a wrapper around
1115 * the generic device structure functions of these calls.
1116 */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001117static inline void *pci_get_drvdata(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118{
1119 return dev_get_drvdata(&pdev->dev);
1120}
1121
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001122static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123{
1124 dev_set_drvdata(&pdev->dev, data);
1125}
1126
1127/* If you want to know what to call your pci_dev, ask this function.
1128 * Again, it's a wrapper around the generic device.
1129 */
Greg KHc6c4f072008-07-03 09:49:39 -07001130static inline const char *pci_name(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131{
Greg KHc6c4f072008-07-03 09:49:39 -07001132 return dev_name(&pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133}
1134
Michael Ellerman2311b1f2005-05-13 17:44:10 +10001135
1136/* Some archs don't want to expose struct resource to userland as-is
1137 * in sysfs and /proc
1138 */
1139#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
1140static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001141 const struct resource *rsrc, resource_size_t *start,
Greg Kroah-Hartmane31dd6e2006-06-12 17:06:02 -07001142 resource_size_t *end)
Michael Ellerman2311b1f2005-05-13 17:44:10 +10001143{
1144 *start = rsrc->start;
1145 *end = rsrc->end;
1146}
1147#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
1148
1149
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150/*
1151 * The world is not perfect and supplies us with broken PCI devices.
1152 * For at least a part of these bugs we need a work-around, so both
1153 * generic (drivers/pci/quirks.c) and per-architecture code can define
1154 * fixup hooks to be called for particular buggy devices.
1155 */
1156
1157struct pci_fixup {
1158 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
1159 void (*hook)(struct pci_dev *dev);
1160};
1161
1162enum pci_fixup_pass {
1163 pci_fixup_early, /* Before probing BARs */
1164 pci_fixup_header, /* After reading configuration header */
1165 pci_fixup_final, /* Final phase of device fixups */
1166 pci_fixup_enable, /* pci_enable_device() time */
Rafael J. Wysockie1a2a512008-05-15 21:51:31 +02001167 pci_fixup_resume, /* pci_device_resume() */
1168 pci_fixup_suspend, /* pci_device_suspend */
1169 pci_fixup_resume_early, /* pci_device_resume_early() */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170};
1171
1172/* Anonymous variables would be nice... */
1173#define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
Adrian Bunk3ff6eec2008-01-24 22:16:20 +01001174 static const struct pci_fixup __pci_fixup_##name __used \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175 __attribute__((__section__(#section))) = { vendor, device, hook };
1176#define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
1177 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1178 vendor##device##hook, vendor, device, hook)
1179#define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
1180 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1181 vendor##device##hook, vendor, device, hook)
1182#define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
1183 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1184 vendor##device##hook, vendor, device, hook)
1185#define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
1186 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1187 vendor##device##hook, vendor, device, hook)
Alan Cox1597cac2006-12-04 15:14:45 -08001188#define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \
1189 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1190 resume##vendor##device##hook, vendor, device, hook)
Rafael J. Wysockie1a2a512008-05-15 21:51:31 +02001191#define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \
1192 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1193 resume_early##vendor##device##hook, vendor, device, hook)
1194#define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \
1195 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1196 suspend##vendor##device##hook, vendor, device, hook)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
1198
1199void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1200
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001201void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
Al Viro5ea81762007-02-11 15:41:31 +00001202void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001203void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
Al Viro5ea81762007-02-11 15:41:31 +00001204int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
Tejun Heo916fbfb2008-03-12 15:26:34 +09001205int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
1206 const char *name);
Tejun Heoec04b072007-03-09 19:45:58 +09001207void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
Al Viro5ea81762007-02-11 15:41:31 +00001208
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209extern int pci_pci_problems;
Alan Cox236561e2006-09-30 23:27:03 -07001210#define PCIPCI_FAIL 1 /* No PCI PCI DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211#define PCIPCI_TRITON 2
1212#define PCIPCI_NATOMA 4
1213#define PCIPCI_VIAETBF 8
1214#define PCIPCI_VSFX 16
Alan Cox236561e2006-09-30 23:27:03 -07001215#define PCIPCI_ALIMAGIK 32 /* Need low latency setting */
1216#define PCIAGP_FAIL 64 /* No PCI to AGP DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217
Atsushi Nemoto4516a612007-02-05 16:36:06 -08001218extern unsigned long pci_cardbus_io_size;
1219extern unsigned long pci_cardbus_mem_size;
1220
Adrian Bunk19792a02008-05-05 21:25:47 +03001221int pcibios_add_platform_entries(struct pci_dev *dev);
1222void pcibios_disable_device(struct pci_dev *dev);
1223int pcibios_set_pcie_reset_state(struct pci_dev *dev,
1224 enum pcie_reset_state state);
Michael Ellerman575e3342007-05-08 12:03:07 +10001225
Robert Hancock7752d5c2008-02-15 01:27:20 -08001226#ifdef CONFIG_PCI_MMCONFIG
Yinghai Lubb63b422008-02-28 23:56:50 -08001227extern void __init pci_mmcfg_early_init(void);
Robert Hancock7752d5c2008-02-15 01:27:20 -08001228extern void __init pci_mmcfg_late_init(void);
1229#else
Yinghai Lubb63b422008-02-28 23:56:50 -08001230static inline void pci_mmcfg_early_init(void) { }
Robert Hancock7752d5c2008-02-15 01:27:20 -08001231static inline void pci_mmcfg_late_init(void) { }
1232#endif
1233
Andrew Patterson0ef5f8f2008-11-10 15:30:50 -07001234int pci_ext_cfg_avail(struct pci_dev *dev);
1235
Andrew Morton1684f5d2008-12-01 14:30:30 -08001236void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
Arjan van de Venaa42d7c2008-09-28 16:36:11 -07001237
Yu Zhaodd7cc442009-03-20 11:25:15 +08001238#ifdef CONFIG_PCI_IOV
1239extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
1240extern void pci_disable_sriov(struct pci_dev *dev);
Yu Zhao74bb1bc2009-03-20 11:25:16 +08001241extern irqreturn_t pci_sriov_migration(struct pci_dev *dev);
Yu Zhaodd7cc442009-03-20 11:25:15 +08001242#else
1243static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
1244{
1245 return -ENODEV;
1246}
1247static inline void pci_disable_sriov(struct pci_dev *dev)
1248{
1249}
Yu Zhao74bb1bc2009-03-20 11:25:16 +08001250static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev)
1251{
1252 return IRQ_NONE;
1253}
Yu Zhaodd7cc442009-03-20 11:25:15 +08001254#endif
1255
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256#endif /* __KERNEL__ */
1257#endif /* LINUX_PCI_H */